; .\OS_MEM.SRC generated from: SOURCE\OS_MEM.C
; COMPILER INVOKED BY:
;        D:\tools\Keil\C51\BIN\C51.EXE SOURCE\OS_MEM.C LARGE OPTIMIZE(SIZE) REGFILE(.\OS_AT89C55WD.ORC) BROWSE NOINTPROMOTE INCDIR(D:\MY\empolder\uCOS-II\MCS-51\AT89C55WD\Keil 7_5\) DEBUG OBJECTEXTEND NOPRINT SRC(.\OS_MEM.SRC)

$NOMOD51

NAME	OS_MEM

P0	DATA	080H
P1	DATA	090H
P2	DATA	0A0H
P3	DATA	0B0H
AC	BIT	0D0H.6
T0	BIT	0B0H.4
T2_EX	BIT	090H.1
T1	BIT	0B0H.5
EA	BIT	0A8H.7
T2	BIT	090H.0
IE	DATA	0A8H
P0_0	BIT	080H.0
P1_0	BIT	090H.0
P0_1	BIT	080H.1
P2_0	BIT	0A0H.0
P1_1	BIT	090H.1
P0_2	BIT	080H.2
P2_1	BIT	0A0H.1
P1_2	BIT	090H.2
P0_3	BIT	080H.3
P2_2	BIT	0A0H.2
P1_3	BIT	090H.3
P0_4	BIT	080H.4
P2_3	BIT	0A0H.3
P1_4	BIT	090H.4
P0_5	BIT	080H.5
EXF2	BIT	0C8H.6
RD	BIT	0B0H.7
P2_4	BIT	0A0H.4
P1_5	BIT	090H.5
P0_6	BIT	080H.6
P2_5	BIT	0A0H.5
P1_6	BIT	090H.6
P0_7	BIT	080H.7
ES	BIT	0A8H.4
P2_6	BIT	0A0H.6
P1_7	BIT	090H.7
P2_7	BIT	0A0H.7
IP	DATA	0B8H
RI	BIT	098H.0
CY	BIT	0D0H.7
INT0	BIT	0B0H.2
TI	BIT	098H.1
INT1	BIT	0B0H.3
RCAP2H	DATA	0CBH
PS	BIT	0B8H.4
SP	DATA	081H
OV	BIT	0D0H.2
RCAP2L	DATA	0CAH
C_T2	BIT	0C8H.1
WR	BIT	0B0H.6
RCLK	BIT	0C8H.5
TCLK	BIT	0C8H.4
PCON	DATA	087H
SBUF	DATA	099H
SCON	DATA	098H
TMOD	DATA	089H
TCON	DATA	088H
IE0	BIT	088H.1
IE1	BIT	088H.3
B	DATA	0F0H
CP_RL2	BIT	0C8H.0
ACC	DATA	0E0H
ET0	BIT	0A8H.1
TF0	BIT	088H.5
ET1	BIT	0A8H.3
TF1	BIT	088H.7
ET2	BIT	0A8H.5
TF2	BIT	0C8H.7
RB8	BIT	098H.2
TH0	DATA	08CH
IT0	BIT	088H.0
EX0	BIT	0A8H.0
TH1	DATA	08DH
IT1	BIT	088H.2
EX1	BIT	0A8H.2
TB8	BIT	098H.3
TH2	DATA	0CDH
P	BIT	0D0H.0
SM0	BIT	098H.7
TL0	DATA	08AH
SM1	BIT	098H.6
TL1	DATA	08BH
SM2	BIT	098H.5
TL2	DATA	0CCH
PT0	BIT	0B8H.1
PT1	BIT	0B8H.3
RS0	BIT	0D0H.3
TR0	BIT	088H.4
PT2	BIT	0B8H.5
RS1	BIT	0D0H.4
TR1	BIT	088H.6
TR2	BIT	0C8H.2
PX0	BIT	0B8H.0
PX1	BIT	0B8H.2
DPH	DATA	083H
DPL	DATA	082H
EXEN2	BIT	0C8H.3
REN	BIT	098H.4
T2MOD	DATA	0C9H
T2CON	DATA	0C8H
DPS	DATA	0A2H
RXD	BIT	0B0H.0
TXD	BIT	0B0H.1
F0	BIT	0D0H.5
F1	BIT	0D0H.1
PSW	DATA	0D0H
; /*
; *********************************************************************************************************
; *                                                uC/OS-II
; *                                          The Real-Time Kernel
; *                                            MEMORY MANAGEMENT
; *
; *                          (c) Copyright 1992-2002, Jean J. Labrosse, Weston, FL
; *                                           All Rights Reserved
; *
; * File : OS_MEM.C
; * By   : Jean J. Labrosse
; *********************************************************************************************************
; */
; 
; #ifndef  OS_MASTER_FILE
; #include "includes.h"
; #endif
; 
; #if (OS_MEM_EN > 0) && (OS_MAX_MEM_PART > 0)
; /*
; *********************************************************************************************************
; *                                        CREATE A MEMORY PARTITION
; *
; * Description : Create a fixed-sized memory partition that will be managed by uC/OS-II.
; *
; * Arguments   : addr     is the starting address of the memory partition
; *
; *               nblks    is the number of memory blocks to create from the partition.
; *
; *               blksize  is the size (in bytes) of each block in the memory partition.
; *
; *               err      is a pointer to a variable containing an error message which will be set by
; *                        this function to either:
; *
; *                        OS_NO_ERR            if the memory partition has been created correctly.
; *                        OS_MEM_INVALID_ADDR  you are specifying an invalid address for the memory 
; *                                             storage of the partition.
; *                        OS_MEM_INVALID_PART  no free partitions available
; *                        OS_MEM_INVALID_BLKS  user specified an invalid number of blocks (must be >= 2)
; *                        OS_MEM_INVALID_SIZE  user specified an invalid block size
; *                                             (must be greater than the size of a pointer)
; * Returns    : != (OS_MEM *)0  is the partition was created
; *              == (OS_MEM *)0  if the partition was not created because of invalid arguments or, no
; *                              free partition is available.
; *********************************************************************************************************
; */
; 
; OS_MEM  *OSMemCreate (void *addr, INT32U nblks, INT32U blksize, INT8U *err)LG_REENTRANT
; {
; #if OS_CRITICAL_METHOD == 3                           /* Allocate storage for CPU status register      */
;     OS_CPU_SR  cpu_sr;
; #endif    
;     OS_MEM    *pmem;
;     INT8U     *pblk;
;     void     **plink;
;     INT32U     i;
; 
; 
; #if OS_ARG_CHK_EN > 0
;     if (addr == (void *)0) {                          /* Must pass a valid address for the memory part. */
;         *err = OS_MEM_INVALID_ADDR;
;         return ((OS_MEM *)0);
;     }
;     if (nblks < 2) {                                  /* Must have at least 2 blocks per partition      */
;         *err = OS_MEM_INVALID_BLKS;
;         return ((OS_MEM *)0);
;     }
;     if (blksize < sizeof(void *)) {                   /* Must contain space for at least a pointer      */
;         *err = OS_MEM_INVALID_SIZE;
;         return ((OS_MEM *)0);
;     }
; #endif
;     OS_ENTER_CRITICAL();
;     pmem = OSMemFreeList;                             /* Get next free memory partition                */
;     if (OSMemFreeList != (OS_MEM *)0) {               /* See if pool of free partitions was empty      */
;         OSMemFreeList = (OS_MEM *)OSMemFreeList->OSMemFreeList;
;     }
;     OS_EXIT_CRITICAL();
;     if (pmem == (OS_MEM *)0) {                        /* See if we have a memory partition             */
;         *err = OS_MEM_INVALID_PART;
;         return ((OS_MEM *)0);
;     }
;     plink = (void **)addr;                            /* Create linked list of free memory blocks      */
;     pblk  = (INT8U *)addr + blksize;
;     for (i = 0; i < (nblks - 1); i++) {
;         *plink = (void *)pblk;
;         plink  = (void **)pblk;
;         pblk   = pblk + blksize;
;     }